function jump(pageName,param){
	if(param == "" || param == undefined){
		return pageName=="" || pageName==undefined ? location.href="javaScript:void(0);" : location.href=pageName+".html";
	}
	return pageName=="" || pageName==undefined ? location.href="javaScript:void(0);" : location.href=pageName+".html?"+param; 
}